Merged imx8 architecture, fix build for imx8 + warnings

In upcoming freescale board LX2160AQDS, the MDIO bus is muxed.
i.e. same MDIO bus can be routed to eight different slots depending
on mux register settings.

To support this mdio mux behavior, we add each MDIO bus mux as a
separate MDIO bus.

Now, various phy devices can be attached to each of these slots(mux).
The information about these devices is passed to OS via device tree.

To do the fdt fixups related to MDIO bus, its necessary that MDIO bus
list is accessed.Therefore, add a function to retrieve the list head.

Signed-off-by: Pankaj Bansal <pankaj.bansal@nxp.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

i.MX8/8X bootable image type is container type.
The bootable image, containers a container set which supports two
container. The 1st container is for SECO firmware, the 2nd container
needs to include scfw, m4_0/1 image, ACore images per your requirement.

Signed-off-by: Peng Fan <peng.fan@nxp.com>

This patch partially reverts:
"spl: fit: Add support for loading FPGA bitstream"
(sha1: 26a642238bdecc53527142dc043b29e21c5cc94c)

There shouldn't be a need to call private spl_load_fpga_image function
because the whole sequence should be already handled by fpga framework.
If there is missing loading bistream by chunks it should be done via
fpga framework instead of having private hooks.
Also spl_load_fpga_image() weak function is not used anywhere and
opening a way for not reviewed hacks out of mainline U-Boot is not the
right way to go.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Test improvements to tidy up output and drop duplicate tests
Sandbox SPL/TPL support
Various dm-related improvements

Add board-specific hook which is executed before the code hands over
control to the OS. This lets the board perform some last-minute clean
ups.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

Rather than returning what is effectively an internal data structure,
return the cros EC device itself.

Signed-off-by: Simon Glass <sjg@chromium.org>

It is useful to be able to set the default log level from the command line
when running sandbox. Add a new -L command-line flag for this. The log
level is set using the enum log_level_t in log.h. At present a number must
be specified, e.g. -L7 for debug.

Signed-off-by: Simon Glass <sjg@chromium.org>

With CONFIG_OPTEE_TA_AVB use the trusted application AVB provided by
OP-TEE to manage rollback indexes and device-lock status.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>